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<h2><span class="refentrytitle"><a name="GApplication.top_of_page"></a>GApplication</span></h2>
<p>GApplication — Core application class</p>
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</tr></table></div>
<div class="refsect1">
<a name="GApplication.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-id-is-valid" title="g_application_id_is_valid ()">g_application_id_is_valid</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GApplication.html" title="GApplication"><span class="returnvalue">GApplication</span></a> *
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-new" title="g_application_new ()">g_application_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-application-id" title="g_application_get_application_id ()">g_application_get_application_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-set-application-id" title="g_application_set_application_id ()">g_application_set_application_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-inactivity-timeout" title="g_application_get_inactivity_timeout ()">g_application_get_inactivity_timeout</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-set-inactivity-timeout" title="g_application_set_inactivity_timeout ()">g_application_set_inactivity_timeout</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="returnvalue">GApplicationFlags</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-flags" title="g_application_get_flags ()">g_application_get_flags</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-set-flags" title="g_application_set_flags ()">g_application_set_flags</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-resource-base-path" title="g_application_get_resource_base_path ()">g_application_get_resource_base_path</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-set-resource-base-path" title="g_application_set_resource_base_path ()">g_application_set_resource_base_path</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="returnvalue">GDBusConnection</span></a> *
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-dbus-connection" title="g_application_get_dbus_connection ()">g_application_get_dbus_connection</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-dbus-object-path" title="g_application_get_dbus_object_path ()">g_application_get_dbus_object_path</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-set-action-group" title="g_application_set_action_group ()">g_application_set_action_group</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-is-registered" title="g_application_get_is_registered ()">g_application_get_is_registered</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-is-remote" title="g_application_get_is_remote ()">g_application_get_is_remote</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-register" title="g_application_register ()">g_application_register</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-hold" title="g_application_hold ()">g_application_hold</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-release" title="g_application_release ()">g_application_release</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-quit" title="g_application_quit ()">g_application_quit</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-activate" title="g_application_activate ()">g_application_activate</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-open" title="g_application_open ()">g_application_open</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-send-notification" title="g_application_send_notification ()">g_application_send_notification</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-withdraw-notification" title="g_application_withdraw_notification ()">g_application_withdraw_notification</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-run" title="g_application_run ()">g_application_run</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-add-main-option-entries" title="g_application_add_main_option_entries ()">g_application_add_main_option_entries</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-add-main-option" title="g_application_add_main_option ()">g_application_add_main_option</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-add-option-group" title="g_application_add_option_group ()">g_application_add_option_group</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-set-default" title="g_application_set_default ()">g_application_set_default</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GApplication.html" title="GApplication"><span class="returnvalue">GApplication</span></a> *
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-default" title="g_application_get_default ()">g_application_get_default</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-mark-busy" title="g_application_mark_busy ()">g_application_mark_busy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-unmark-busy" title="g_application_unmark_busy ()">g_application_unmark_busy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-get-is-busy" title="g_application_get_is_busy ()">g_application_get_is_busy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-bind-busy-property" title="g_application_bind_busy_property ()">g_application_bind_busy_property</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GApplication.html#g-application-unbind-busy-property" title="g_application_unbind_busy_property ()">g_application_unbind_busy_property</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GApplication.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type">
<a class="link" href="GActionGroup.html" title="GActionGroup"><span class="type">GActionGroup</span></a> *</td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--action-group" title="The “action-group” property">action-group</a></td>
<td class="property_flags">Write</td>
</tr>
<tr>
<td class="property_type">
<a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--application-id" title="The “application-id” property">application-id</a></td>
<td class="property_flags">Read / Write / Construct</td>
</tr>
<tr>
<td class="property_type"><a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="type">GApplicationFlags</span></a></td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--flags" title="The “flags” property">flags</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="../glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--inactivity-timeout" title="The “inactivity-timeout” property">inactivity-timeout</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--is-busy" title="The “is-busy” property">is-busy</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--is-registered" title="The “is-registered” property">is-registered</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--is-remote" title="The “is-remote” property">is-remote</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="GApplication.html#GApplication--resource-base-path" title="The “resource-base-path” property">resource-base-path</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GApplication.signals"></a><h2>Signals</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="GApplication.html#GApplication-activate" title="The “activate” signal">activate</a></td>
<td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><a href="../glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a></td>
<td class="signal_name"><a class="link" href="GApplication.html#GApplication-command-line" title="The “command-line” signal">command-line</a></td>
<td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><a href="../glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a></td>
<td class="signal_name"><a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal">handle-local-options</a></td>
<td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="GApplication.html#GApplication-open" title="The “open” signal">open</a></td>
<td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="GApplication.html#GApplication-shutdown" title="The “shutdown” signal">shutdown</a></td>
<td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="GApplication.html#GApplication-startup" title="The “startup” signal">startup</a></td>
<td class="signal_flags"><a href="../gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS">Run First</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GApplication.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GApplication.html#GApplication-struct" title="GApplication">GApplication</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="GApplication.html#GApplicationClass" title="struct GApplicationClass">GApplicationClass</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags">GApplicationFlags</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GApplication.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="../gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> GApplication
</pre>
</div>
<div class="refsect1">
<a name="GApplication.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GApplication implements
 <a class="link" href="GActionGroup.html" title="GActionGroup">GActionGroup</a> and  <a class="link" href="GActionMap.html" title="GActionMap">GActionMap</a>.</p>
</div>
<div class="refsect1">
<a name="GApplication.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gio/gio.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GApplication.description"></a><h2>Description</h2>
<p>A <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is the foundation of an application.  It wraps some
low-level platform-specific services and is intended to act as the
foundation for higher-level application classes such as
<span class="type">GtkApplication</span> or <span class="type">MxApplication</span>.  In general, you should not use
this class outside of a higher level framework.</p>
<p>GApplication provides convenient life cycle management by maintaining
a "use count" for the primary application instance. The use count can
be changed using <a class="link" href="GApplication.html#g-application-hold" title="g_application_hold ()"><code class="function">g_application_hold()</code></a> and <a class="link" href="GApplication.html#g-application-release" title="g_application_release ()"><code class="function">g_application_release()</code></a>. If
it drops to zero, the application exits. Higher-level classes such as
<span class="type">GtkApplication</span> employ the use count to ensure that the application
stays alive as long as it has any opened windows.</p>
<p>Another feature that GApplication (optionally) provides is process
uniqueness. Applications can make use of this functionality by
providing a unique application ID. If given, only one application
with this ID can be running at a time per session. The session
concept is platform-dependent, but corresponds roughly to a graphical
desktop login. When your application is launched again, its
arguments are passed through platform communication to the already
running program. The already running instance of the program is
called the "primary instance"; for non-unique applications this is
the always the current instance. On Linux, the D-Bus session bus
is used for communication.</p>
<p>The use of <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> differs from some other commonly-used
uniqueness libraries (such as libunique) in important ways. The
application is not expected to manually register itself and check
if it is the primary instance. Instead, the <code class="function">main()</code> function of a
<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> should do very little more than instantiating the
application instance, possibly connecting signal handlers, then
calling <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a>. All checks for uniqueness are done
internally. If the application is the primary instance then the
startup signal is emitted and the mainloop runs. If the application
is not the primary instance then a signal is sent to the primary
instance and <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> promptly returns. See the code
examples below.</p>
<p>If used, the expected form of an application identifier is very close
to that of of a
<a class="ulink" href="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-interface" target="_top">DBus bus name</a>.
Examples include: "com.example.MyApp", "org.example.internal-apps.Calculator".
For details on valid application identifiers, see <a class="link" href="GApplication.html#g-application-id-is-valid" title="g_application_id_is_valid ()"><code class="function">g_application_id_is_valid()</code></a>.</p>
<p>On Linux, the application identifier is claimed as a well-known bus name
on the user's session bus.  This means that the uniqueness of your
application is scoped to the current session.  It also means that your
application may provide additional services (through registration of other
object paths) at that bus name.  The registration of these object paths
should be done with the shared GDBus session bus.  Note that due to the
internal architecture of GDBus, method calls can be dispatched at any time
(even if a main loop is not running).  For this reason, you must ensure that
any object paths that you wish to register are registered before <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a>
attempts to acquire the bus name of your application (which happens in
<a class="link" href="GApplication.html#g-application-register" title="g_application_register ()"><code class="function">g_application_register()</code></a>).  Unfortunately, this means that you cannot use
<a class="link" href="GApplication.html#g-application-get-is-remote" title="g_application_get_is_remote ()"><code class="function">g_application_get_is_remote()</code></a> to decide if you want to register object paths.</p>
<p>GApplication also implements the <a class="link" href="GActionGroup.html" title="GActionGroup"><span class="type">GActionGroup</span></a> and <a class="link" href="GActionMap.html" title="GActionMap"><span class="type">GActionMap</span></a>
interfaces and lets you easily export actions by adding them with
<a class="link" href="GActionMap.html#g-action-map-add-action" title="g_action_map_add_action ()"><code class="function">g_action_map_add_action()</code></a>. When invoking an action by calling
<a class="link" href="GActionGroup.html#g-action-group-activate-action" title="g_action_group_activate_action ()"><code class="function">g_action_group_activate_action()</code></a> on the application, it is always
invoked in the primary instance. The actions are also exported on
the session bus, and GIO provides the <a class="link" href="GDBusActionGroup.html" title="GDBusActionGroup"><span class="type">GDBusActionGroup</span></a> wrapper to
conveniently access them remotely. GIO provides a <a class="link" href="GDBusMenuModel.html" title="GDBusMenuModel"><span class="type">GDBusMenuModel</span></a> wrapper
for remote access to exported <a href="GMenuModel.html#GMenuModel-struct"><span class="type">GMenuModels</span></a>.</p>
<p>There is a number of different entry points into a GApplication:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>via 'Activate' (i.e. just starting the application)</p></li>
<li class="listitem"><p>via 'Open' (i.e. opening some files)</p></li>
<li class="listitem"><p>by handling a command-line</p></li>
<li class="listitem"><p>via activating an action</p></li>
</ul></div>
<p>The <a class="link" href="GApplication.html#GApplication-startup" title="The “startup” signal"><span class="type">“startup”</span></a> signal lets you handle the application
initialization for all of these in a single place.</p>
<p>Regardless of which of these entry points is used to start the
application, GApplication passes some "platform data from the
launching instance to the primary instance, in the form of a
<a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> dictionary mapping strings to variants. To use platform
data, override the <em class="parameter"><code>before_emit</code></em>
 or <em class="parameter"><code>after_emit</code></em>
 virtual functions
in your <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> subclass. When dealing with
<a class="link" href="GApplicationCommandLine.html" title="GApplicationCommandLine"><span class="type">GApplicationCommandLine</span></a> objects, the platform data is
directly available via <a class="link" href="GApplicationCommandLine.html#g-application-command-line-get-cwd" title="g_application_command_line_get_cwd ()"><code class="function">g_application_command_line_get_cwd()</code></a>,
<a class="link" href="GApplicationCommandLine.html#g-application-command-line-get-environ" title="g_application_command_line_get_environ ()"><code class="function">g_application_command_line_get_environ()</code></a> and
<a class="link" href="GApplicationCommandLine.html#g-application-command-line-get-platform-data" title="g_application_command_line_get_platform_data ()"><code class="function">g_application_command_line_get_platform_data()</code></a>.</p>
<p>As the name indicates, the platform data may vary depending on the
operating system, but it always includes the current directory (key
"cwd"), and optionally the environment (ie the set of environment
variables and their values) of the calling process (key "environ").
The environment is only added to the platform data if the
<a class="link" href="GApplication.html#G-APPLICATION-SEND-ENVIRONMENT:CAPS"><code class="literal">G_APPLICATION_SEND_ENVIRONMENT</code></a> flag is set. <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> subclasses
can add their own platform data by overriding the <em class="parameter"><code>add_platform_data</code></em>

virtual function. For instance, <span class="type">GtkApplication</span> adds startup notification
data in this way.</p>
<p>To parse commandline arguments you may handle the
<a class="link" href="GApplication.html#GApplication-command-line" title="The “command-line” signal"><span class="type">“command-line”</span></a> signal or override the <code class="function">local_command_line()</code>
vfunc, to parse them in either the primary instance or the local instance,
respectively.</p>
<p>For an example of opening files with a GApplication, see
<a class="ulink" href="https://git.gnome.org/browse/glib/tree/gio/tests/gapplication-example-open.c" target="_top">gapplication-example-open.c</a>.</p>
<p>For an example of using actions with GApplication, see
<a class="ulink" href="https://git.gnome.org/browse/glib/tree/gio/tests/gapplication-example-actions.c" target="_top">gapplication-example-actions.c</a>.</p>
<p>For an example of using extra D-Bus hooks with GApplication, see
<a class="ulink" href="https://git.gnome.org/browse/glib/tree/gio/tests/gapplication-example-dbushooks.c" target="_top">gapplication-example-dbushooks.c</a>.</p>
</div>
<div class="refsect1">
<a name="GApplication.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="g-application-id-is-valid"></a><h3>g_application_id_is_valid ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_application_id_is_valid (<em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *application_id</code></em>);</pre>
<p>Checks if <em class="parameter"><code>application_id</code></em>
 is a valid application identifier.</p>
<p>A valid ID is required for calls to <a class="link" href="GApplication.html#g-application-new" title="g_application_new ()"><code class="function">g_application_new()</code></a> and
<a class="link" href="GApplication.html#g-application-set-application-id" title="g_application_set_application_id ()"><code class="function">g_application_set_application_id()</code></a>.</p>
<p>For convenience, the restrictions on application identifiers are
reproduced here:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>Application identifiers must contain only the ASCII characters
"A-Z[0-9]_-." and must not begin with a digit.</p></li>
<li class="listitem"><p>Application identifiers must contain at least one '.' (period)
character (and thus at least three elements).</p></li>
<li class="listitem"><p>Application identifiers must not begin or end with a '.' (period)
character.</p></li>
<li class="listitem"><p>Application identifiers must not contain consecutive '.' (period)
characters.</p></li>
<li class="listitem"><p>Application identifiers must not exceed 255 characters.</p></li>
</ul></div>
<div class="refsect3">
<a name="g-application-id-is-valid.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application_id</p></td>
<td class="parameter_description"><p>a potential application identifier</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-id-is-valid.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>application_id</code></em>
is valid</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="g-application-new"></a><h3>g_application_new ()</h3>
<pre class="programlisting"><a class="link" href="GApplication.html" title="GApplication"><span class="returnvalue">GApplication</span></a> *
g_application_new (<em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *application_id</code></em>,
                   <em class="parameter"><code><a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="type">GApplicationFlags</span></a> flags</code></em>);</pre>
<p>Creates a new <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> instance.</p>
<p>If non-<a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, the application id must be valid.  See
<a class="link" href="GApplication.html#g-application-id-is-valid" title="g_application_id_is_valid ()"><code class="function">g_application_id_is_valid()</code></a>.</p>
<p>If no application ID is given then some features of <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a>
(most notably application uniqueness) will be disabled.</p>
<div class="refsect3">
<a name="g-application-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application_id</p></td>
<td class="parameter_description"><p> the application id. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>the application flags</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-new.returns"></a><h4>Returns</h4>
<p> a new <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> instance</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-application-id"></a><h3>g_application_get_application_id ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_application_get_application_id (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the unique identifier for <em class="parameter"><code>application</code></em>
.</p>
<div class="refsect3">
<a name="g-application-get-application-id.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-application-id.returns"></a><h4>Returns</h4>
<p> the identifier for <em class="parameter"><code>application</code></em>
, owned by <em class="parameter"><code>application</code></em>
</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-set-application-id"></a><h3>g_application_set_application_id ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_set_application_id (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                  <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *application_id</code></em>);</pre>
<p>Sets the unique identifier for <em class="parameter"><code>application</code></em>
.</p>
<p>The application id can only be modified if <em class="parameter"><code>application</code></em>
 has not yet
been registered.</p>
<p>If non-<a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, the application id must be valid.  See
<a class="link" href="GApplication.html#g-application-id-is-valid" title="g_application_id_is_valid ()"><code class="function">g_application_id_is_valid()</code></a>.</p>
<div class="refsect3">
<a name="g-application-set-application-id.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>application_id</p></td>
<td class="parameter_description"><p> the identifier for <em class="parameter"><code>application</code></em>
. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-inactivity-timeout"></a><h3>g_application_get_inactivity_timeout ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
g_application_get_inactivity_timeout (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the current inactivity timeout for the application.</p>
<p>This is the amount of time (in milliseconds) after the last call to
<a class="link" href="GApplication.html#g-application-release" title="g_application_release ()"><code class="function">g_application_release()</code></a> before the application stops running.</p>
<div class="refsect3">
<a name="g-application-get-inactivity-timeout.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-inactivity-timeout.returns"></a><h4>Returns</h4>
<p> the timeout, in milliseconds</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-set-inactivity-timeout"></a><h3>g_application_set_inactivity_timeout ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_set_inactivity_timeout (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                      <em class="parameter"><code><a href="../glib-Basic-Types.html#guint"><span class="type">guint</span></a> inactivity_timeout</code></em>);</pre>
<p>Sets the current inactivity timeout for the application.</p>
<p>This is the amount of time (in milliseconds) after the last call to
<a class="link" href="GApplication.html#g-application-release" title="g_application_release ()"><code class="function">g_application_release()</code></a> before the application stops running.</p>
<p>This call has no side effects of its own.  The value set here is only
used for next time <a class="link" href="GApplication.html#g-application-release" title="g_application_release ()"><code class="function">g_application_release()</code></a> drops the use count to
zero.  Any timeouts currently in progress are not impacted.</p>
<div class="refsect3">
<a name="g-application-set-inactivity-timeout.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>inactivity_timeout</p></td>
<td class="parameter_description"><p>the timeout, in milliseconds</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-flags"></a><h3>g_application_get_flags ()</h3>
<pre class="programlisting"><a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="returnvalue">GApplicationFlags</span></a>
g_application_get_flags (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the flags for <em class="parameter"><code>application</code></em>
.</p>
<p>See <a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="type">GApplicationFlags</span></a>.</p>
<div class="refsect3">
<a name="g-application-get-flags.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-flags.returns"></a><h4>Returns</h4>
<p> the flags for <em class="parameter"><code>application</code></em>
</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-set-flags"></a><h3>g_application_set_flags ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_set_flags (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                         <em class="parameter"><code><a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="type">GApplicationFlags</span></a> flags</code></em>);</pre>
<p>Sets the flags for <em class="parameter"><code>application</code></em>
.</p>
<p>The flags can only be modified if <em class="parameter"><code>application</code></em>
 has not yet been
registered.</p>
<p>See <a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="type">GApplicationFlags</span></a>.</p>
<div class="refsect3">
<a name="g-application-set-flags.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>the flags for <em class="parameter"><code>application</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-resource-base-path"></a><h3>g_application_get_resource_base_path ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_application_get_resource_base_path (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the resource base path of <em class="parameter"><code>application</code></em>
.</p>
<p>See <a class="link" href="GApplication.html#g-application-set-resource-base-path" title="g_application_set_resource_base_path ()"><code class="function">g_application_set_resource_base_path()</code></a> for more information.</p>
<div class="refsect3">
<a name="g-application-get-resource-base-path.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-resource-base-path.returns"></a><h4>Returns</h4>
<p> the base resource path, if one is set. </p>
<p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-42.html#api-index-2.42">2.42</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-set-resource-base-path"></a><h3>g_application_set_resource_base_path ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_set_resource_base_path (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                      <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *resource_path</code></em>);</pre>
<p>Sets (or unsets) the base resource path of <em class="parameter"><code>application</code></em>
.</p>
<p>The path is used to automatically load various <GTKDOCLINK HREF="gresource">application
resources</GTKDOCLINK> such as menu layouts and action descriptions.
The various types of resources will be found at fixed names relative
to the given base path.</p>
<p>By default, the resource base path is determined from the application
ID by prefixing '/' and replacing each '.' with '/'.  This is done at
the time that the <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> object is constructed.  Changes to
the application ID after that point will not have an impact on the
resource base path.</p>
<p>As an example, if the application has an ID of "org.example.app" then
the default resource base path will be "/org/example/app".  If this
is a <span class="type">GtkApplication</span> (and you have not manually changed the path)
then Gtk will then search for the menus of the application at
"/org/example/app/gtk/menus.ui".</p>
<p>See <a class="link" href="GResource.html" title="GResource"><span class="type">GResource</span></a> for more information about adding resources to your
application.</p>
<p>You can disable automatic resource loading functionality by setting
the path to <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>Changing the resource base path once the application is running is
not recommended.  The point at which the resource path is consulted
for forming paths for various purposes is unspecified.  When writing
a sub-class of <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> you should either set the
<a class="link" href="GApplication.html#GApplication--resource-base-path" title="The “resource-base-path” property"><span class="type">“resource-base-path”</span></a> property at construction time, or call
this function during the instance initialization. Alternatively, you
can call this function in the <a class="link" href="GApplication.html#GApplicationClass.startup"><span class="type">GApplicationClass.startup</span></a> virtual function,
before chaining up to the parent implementation.</p>
<div class="refsect3">
<a name="g-application-set-resource-base-path.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>resource_path</p></td>
<td class="parameter_description"><p> the resource path to use. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-42.html#api-index-2.42">2.42</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-dbus-connection"></a><h3>g_application_get_dbus_connection ()</h3>
<pre class="programlisting"><a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="returnvalue">GDBusConnection</span></a> *
g_application_get_dbus_connection (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the <a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="type">GDBusConnection</span></a> being used by the application, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>If <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is using its D-Bus backend then this function will
return the <a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="type">GDBusConnection</span></a> being used for uniqueness and
communication with the desktop environment and other instances of the
application.</p>
<p>If <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is not using D-Bus then this function will return
<a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.  This includes the situation where the D-Bus backend would
normally be in use but we were unable to connect to the bus.</p>
<p>This function must not be called before the application has been
registered.  See <a class="link" href="GApplication.html#g-application-get-is-registered" title="g_application_get_is_registered ()"><code class="function">g_application_get_is_registered()</code></a>.</p>
<div class="refsect3">
<a name="g-application-get-dbus-connection.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-dbus-connection.returns"></a><h4>Returns</h4>
<p> a <a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="type">GDBusConnection</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-34.html#api-index-2.34">2.34</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-dbus-object-path"></a><h3>g_application_get_dbus_object_path ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_application_get_dbus_object_path (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the D-Bus object path being used by the application, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>If <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is using its D-Bus backend then this function will
return the D-Bus object path that <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is using.  If the
application is the primary instance then there is an object published
at this path.  If the application is not the primary instance then
the result of this function is undefined.</p>
<p>If <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is not using D-Bus then this function will return
<a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.  This includes the situation where the D-Bus backend would
normally be in use but we were unable to connect to the bus.</p>
<p>This function must not be called before the application has been
registered.  See <a class="link" href="GApplication.html#g-application-get-is-registered" title="g_application_get_is_registered ()"><code class="function">g_application_get_is_registered()</code></a>.</p>
<div class="refsect3">
<a name="g-application-get-dbus-object-path.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-dbus-object-path.returns"></a><h4>Returns</h4>
<p> the object path, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-34.html#api-index-2.34">2.34</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-set-action-group"></a><h3>g_application_set_action_group ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_set_action_group (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                <em class="parameter"><code><a class="link" href="GActionGroup.html" title="GActionGroup"><span class="type">GActionGroup</span></a> *action_group</code></em>);</pre>
<div class="warning">
<p><code class="literal">g_application_set_action_group</code> has been deprecated since version 2.32 and should not be used in newly-written code.</p>
<p>Use the <a class="link" href="GActionMap.html" title="GActionMap"><span class="type">GActionMap</span></a> interface instead.  Never ever
mix use of this API with use of <a class="link" href="GActionMap.html" title="GActionMap"><span class="type">GActionMap</span></a> on the same <em class="parameter"><code>application</code></em>

or things will go very badly wrong.  This function is known to
introduce buggy behaviour (ie: signals not emitted on changes to the
action group), so you should really use <a class="link" href="GActionMap.html" title="GActionMap"><span class="type">GActionMap</span></a> instead.</p>
</div>
<p>This used to be how actions were associated with a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a>.
Now there is <a class="link" href="GActionMap.html" title="GActionMap"><span class="type">GActionMap</span></a> for that.</p>
<div class="refsect3">
<a name="g-application-set-action-group.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>action_group</p></td>
<td class="parameter_description"><p> a <a class="link" href="GActionGroup.html" title="GActionGroup"><span class="type">GActionGroup</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-is-registered"></a><h3>g_application_get_is_registered ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_application_get_is_registered (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Checks if <em class="parameter"><code>application</code></em>
 is registered.</p>
<p>An application is registered if <a class="link" href="GApplication.html#g-application-register" title="g_application_register ()"><code class="function">g_application_register()</code></a> has been
successfully called.</p>
<div class="refsect3">
<a name="g-application-get-is-registered.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-is-registered.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>application</code></em>
is registered</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-is-remote"></a><h3>g_application_get_is_remote ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_application_get_is_remote (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Checks if <em class="parameter"><code>application</code></em>
 is remote.</p>
<p>If <em class="parameter"><code>application</code></em>
 is remote then it means that another instance of
application already exists (the 'primary' instance).  Calls to
perform actions on <em class="parameter"><code>application</code></em>
 will result in the actions being
performed by the primary instance.</p>
<p>The value of this property cannot be accessed before
<a class="link" href="GApplication.html#g-application-register" title="g_application_register ()"><code class="function">g_application_register()</code></a> has been called.  See
<a class="link" href="GApplication.html#g-application-get-is-registered" title="g_application_get_is_registered ()"><code class="function">g_application_get_is_registered()</code></a>.</p>
<div class="refsect3">
<a name="g-application-get-is-remote.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-is-remote.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>application</code></em>
is remote</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-register"></a><h3>g_application_register ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_application_register (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                        <em class="parameter"><code><a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                        <em class="parameter"><code><a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Attempts registration of the application.</p>
<p>This is the point at which the application discovers if it is the
primary instance or merely acting as a remote for an already-existing
primary instance.  This is implemented by attempting to acquire the
application identifier as a unique bus name on the session bus using
GDBus.</p>
<p>If there is no application ID or if <a class="link" href="GApplication.html#G-APPLICATION-NON-UNIQUE:CAPS"><code class="literal">G_APPLICATION_NON_UNIQUE</code></a> was
given, then this process will always become the primary instance.</p>
<p>Due to the internal architecture of GDBus, method calls can be
dispatched at any time (even if a main loop is not running).  For
this reason, you must ensure that any object paths that you wish to
register are registered before calling this function.</p>
<p>If the application has already been registered then <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> is
returned with no work performed.</p>
<p>The <a class="link" href="GApplication.html#GApplication-startup" title="The “startup” signal"><span class="type">“startup”</span></a> signal is emitted if registration succeeds
and <em class="parameter"><code>application</code></em>
 is the primary instance (including the non-unique
case).</p>
<p>In the event of an error (such as <em class="parameter"><code>cancellable</code></em>
 being cancelled, or a
failure to connect to the session bus), <a href="../glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned and <em class="parameter"><code>error</code></em>

is set appropriately.</p>
<p>Note: the return value of this function is not an indicator that this
instance is or is not the primary instance of the application.  See
<a class="link" href="GApplication.html#g-application-get-is-remote" title="g_application_get_is_remote ()"><code class="function">g_application_get_is_remote()</code></a> for that.</p>
<div class="refsect3">
<a name="g-application-register.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> a <a class="link" href="GCancellable.html" title="GCancellable"><span class="type">GCancellable</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a pointer to a NULL <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-register.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if registration succeeded</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-hold"></a><h3>g_application_hold ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_hold (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Increases the use count of <em class="parameter"><code>application</code></em>
.</p>
<p>Use this function to indicate that the application has a reason to
continue to run.  For example, <a class="link" href="GApplication.html#g-application-hold" title="g_application_hold ()"><code class="function">g_application_hold()</code></a> is called by GTK+
when a toplevel window is on the screen.</p>
<p>To cancel the hold, call <a class="link" href="GApplication.html#g-application-release" title="g_application_release ()"><code class="function">g_application_release()</code></a>.</p>
<div class="refsect3">
<a name="g-application-hold.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="g-application-release"></a><h3>g_application_release ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_release (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Decrease the use count of <em class="parameter"><code>application</code></em>
.</p>
<p>When the use count reaches zero, the application will stop running.</p>
<p>Never call this function except to cancel the effect of a previous
call to <a class="link" href="GApplication.html#g-application-hold" title="g_application_hold ()"><code class="function">g_application_hold()</code></a>.</p>
<div class="refsect3">
<a name="g-application-release.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="g-application-quit"></a><h3>g_application_quit ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_quit (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Immediately quits the application.</p>
<p>Upon return to the mainloop, <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> will return,
calling only the 'shutdown' function before doing so.</p>
<p>The hold count is ignored.</p>
<p>The result of calling <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> again after it returns is
unspecified.</p>
<div class="refsect3">
<a name="g-application-quit.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-32.html#api-index-2.32">2.32</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-activate"></a><h3>g_application_activate ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_activate (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Activates the application.</p>
<p>In essence, this results in the <a class="link" href="GApplication.html#GApplication-activate" title="The “activate” signal"><span class="type">“activate”</span></a> signal being
emitted in the primary instance.</p>
<p>The application must be registered before calling this function.</p>
<div class="refsect3">
<a name="g-application-activate.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-open"></a><h3>g_application_open ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_open (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                    <em class="parameter"><code><a class="link" href="GFile.html" title="GFile"><span class="type">GFile</span></a> **files</code></em>,
                    <em class="parameter"><code><a href="../glib-Basic-Types.html#gint"><span class="type">gint</span></a> n_files</code></em>,
                    <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *hint</code></em>);</pre>
<p>Opens the given files.</p>
<p>In essence, this results in the <a class="link" href="GApplication.html#GApplication-open" title="The “open” signal"><span class="type">“open”</span></a> signal being emitted
in the primary instance.</p>
<p><em class="parameter"><code>n_files</code></em>
 must be greater than zero.</p>
<p><em class="parameter"><code>hint</code></em>
 is simply passed through to the ::open signal.  It is
intended to be used by applications that have multiple modes for
opening files (eg: "view" vs "edit", etc).  Unless you have a need
for this functionality, you should use "".</p>
<p>The application must be registered before calling this function
and it must have the <a class="link" href="GApplication.html#G-APPLICATION-HANDLES-OPEN:CAPS"><code class="literal">G_APPLICATION_HANDLES_OPEN</code></a> flag set.</p>
<div class="refsect3">
<a name="g-application-open.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>files</p></td>
<td class="parameter_description"><p> an array of <a href="GFile.html#GFile-struct"><span class="type">GFiles</span></a> to open. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_files]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>n_files</p></td>
<td class="parameter_description"><p>the length of the <em class="parameter"><code>files</code></em>
array</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>hint</p></td>
<td class="parameter_description"><p>a hint (or ""), but never <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-send-notification"></a><h3>g_application_send_notification ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_send_notification (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                 <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *id</code></em>,
                                 <em class="parameter"><code><a class="link" href="GNotification.html" title="GNotification"><span class="type">GNotification</span></a> *notification</code></em>);</pre>
<p>Sends a notification on behalf of <em class="parameter"><code>application</code></em>
 to the desktop shell.
There is no guarantee that the notification is displayed immediately,
or even at all.</p>
<p>Notifications may persist after the application exits. It will be
D-Bus-activated when the notification or one of its actions is
activated.</p>
<p>Modifying <em class="parameter"><code>notification</code></em>
 after this call has no effect. However, the
object can be reused for a later call to this function.</p>
<p><em class="parameter"><code>id</code></em>
 may be any string that uniquely identifies the event for the
application. It does not need to be in any special format. For
example, "new-message" might be appropriate for a notification about
new messages.</p>
<p>If a previous notification was sent with the same <em class="parameter"><code>id</code></em>
, it will be
replaced with <em class="parameter"><code>notification</code></em>
 and shown again as if it was a new
notification. This works even for notifications sent from a previous
execution of the application, as long as <em class="parameter"><code>id</code></em>
 is the same string.</p>
<p><em class="parameter"><code>id</code></em>
 may be <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, but it is impossible to replace or withdraw
notifications without an id.</p>
<p>If <em class="parameter"><code>notification</code></em>
 is no longer relevant, it can be withdrawn with
<a class="link" href="GApplication.html#g-application-withdraw-notification" title="g_application_withdraw_notification ()"><code class="function">g_application_withdraw_notification()</code></a>.</p>
<div class="refsect3">
<a name="g-application-send-notification.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>id</p></td>
<td class="parameter_description"><p> id of the notification, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>notification</p></td>
<td class="parameter_description"><p>the <a class="link" href="GNotification.html" title="GNotification"><span class="type">GNotification</span></a> to send</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-40.html#api-index-2.40">2.40</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-withdraw-notification"></a><h3>g_application_withdraw_notification ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_withdraw_notification (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                     <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *id</code></em>);</pre>
<p>Withdraws a notification that was sent with
<a class="link" href="GApplication.html#g-application-send-notification" title="g_application_send_notification ()"><code class="function">g_application_send_notification()</code></a>.</p>
<p>This call does nothing if a notification with <em class="parameter"><code>id</code></em>
 doesn't exist or
the notification was never sent.</p>
<p>This function works even for notifications sent in previous
executions of this application, as long <em class="parameter"><code>id</code></em>
 is the same as it was for
the sent notification.</p>
<p>Note that notifications are dismissed when the user clicks on one
of the buttons in a notification or triggers its default action, so
there is no need to explicitly withdraw the notification in that case.</p>
<div class="refsect3">
<a name="g-application-withdraw-notification.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>id</p></td>
<td class="parameter_description"><p>id of a previously sent notification</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-40.html#api-index-2.40">2.40</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-run"></a><h3>g_application_run ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
g_application_run (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                   <em class="parameter"><code><span class="type">int</span> argc</code></em>,
                   <em class="parameter"><code><span class="type">char</span> **argv</code></em>);</pre>
<p>Runs the application.</p>
<p>This function is intended to be run from <code class="function">main()</code> and its return value
is intended to be returned by <code class="function">main()</code>. Although you are expected to pass
the <em class="parameter"><code>argc</code></em>
, <em class="parameter"><code>argv</code></em>
 parameters from <code class="function">main()</code> to this function, it is possible
to pass <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if <em class="parameter"><code>argv</code></em>
 is not available or commandline handling is not
required.  Note that on Windows, <em class="parameter"><code>argc</code></em>
 and <em class="parameter"><code>argv</code></em>
 are ignored, and
<a href="../glib-Windows-Compatibility-Functions.html#g-win32-get-command-line"><code class="function">g_win32_get_command_line()</code></a> is called internally (for proper support
of Unicode commandline arguments).</p>
<p><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> will attempt to parse the commandline arguments.  You
can add commandline flags to the list of recognised options by way of
<a class="link" href="GApplication.html#g-application-add-main-option-entries" title="g_application_add_main_option_entries ()"><code class="function">g_application_add_main_option_entries()</code></a>.  After this, the
<a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a> signal is emitted, from which the
application can inspect the values of its <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntrys</span></a>.</p>
<p><a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a> is a good place to handle options
such as <code class="literal">--version</code>, where an immediate reply from the local process is
desired (instead of communicating with an already-running instance).
A <a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a> handler can stop further processing
by returning a non-negative value, which then becomes the exit status of
the process.</p>
<p>What happens next depends on the flags: if
<a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> was specified then the remaining
commandline arguments are sent to the primary instance, where a
<a class="link" href="GApplication.html#GApplication-command-line" title="The “command-line” signal"><span class="type">“command-line”</span></a> signal is emitted.  Otherwise, the
remaining commandline arguments are assumed to be a list of files.
If there are no files listed, the application is activated via the
<a class="link" href="GApplication.html#GApplication-activate" title="The “activate” signal"><span class="type">“activate”</span></a> signal.  If there are one or more files, and
<a class="link" href="GApplication.html#G-APPLICATION-HANDLES-OPEN:CAPS"><code class="literal">G_APPLICATION_HANDLES_OPEN</code></a> was specified then the files are opened
via the <a class="link" href="GApplication.html#GApplication-open" title="The “open” signal"><span class="type">“open”</span></a> signal.</p>
<p>If you are interested in doing more complicated local handling of the
commandline then you should implement your own <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> subclass
and override <code class="function">local_command_line()</code>. In this case, you most likely want
to return <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> from your <code class="function">local_command_line()</code> implementation to
suppress the default handling. See
gapplication-example-cmdline2.c
for an example.</p>
<p>If, after the above is done, the use count of the application is zero
then the exit status is returned immediately.  If the use count is
non-zero then the default main context is iterated until the use count
falls to zero, at which point 0 is returned.</p>
<p>If the <a class="link" href="GApplication.html#G-APPLICATION-IS-SERVICE:CAPS"><code class="literal">G_APPLICATION_IS_SERVICE</code></a> flag is set, then the service will
run for as much as 10 seconds with a use count of zero while waiting
for the message that caused the activation to arrive.  After that,
if the use count falls to zero the application will exit immediately,
except in the case that <a class="link" href="GApplication.html#g-application-set-inactivity-timeout" title="g_application_set_inactivity_timeout ()"><code class="function">g_application_set_inactivity_timeout()</code></a> is in
use.</p>
<p>This function sets the prgname (<a href="../glib-Miscellaneous-Utility-Functions.html#g-set-prgname"><code class="function">g_set_prgname()</code></a>), if not already set,
to the basename of argv[0].</p>
<p>Much like <a href="../glib-The-Main-Event-Loop.html#g-main-loop-run"><code class="function">g_main_loop_run()</code></a>, this function will acquire the main context
for the duration that the application is running.</p>
<p>Since 2.40, applications that are not explicitly flagged as services
or launchers (ie: neither <a class="link" href="GApplication.html#G-APPLICATION-IS-SERVICE:CAPS"><code class="literal">G_APPLICATION_IS_SERVICE</code></a> or
<a class="link" href="GApplication.html#G-APPLICATION-IS-LAUNCHER:CAPS"><code class="literal">G_APPLICATION_IS_LAUNCHER</code></a> are given as flags) will check (from the
default handler for local_command_line) if "--gapplication-service"
was given in the command line.  If this flag is present then normal
commandline processing is interrupted and the
<a class="link" href="GApplication.html#G-APPLICATION-IS-SERVICE:CAPS"><code class="literal">G_APPLICATION_IS_SERVICE</code></a> flag is set.  This provides a "compromise"
solution whereby running an application directly from the commandline
will invoke it in the normal way (which can be useful for debugging)
while still allowing applications to be D-Bus activated in service
mode.  The D-Bus service file should invoke the executable with
"--gapplication-service" as the sole commandline argument.  This
approach is suitable for use by most graphical applications but
should not be used from applications like editors that need precise
control over when processes invoked via the commandline will exit and
what their exit status will be.</p>
<div class="refsect3">
<a name="g-application-run.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>argc</p></td>
<td class="parameter_description"><p>the argc from <code class="function">main()</code> (or 0 if <em class="parameter"><code>argv</code></em>
is <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>argv</p></td>
<td class="parameter_description"><p> the argv from <code class="function">main()</code>, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=argc][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-run.returns"></a><h4>Returns</h4>
<p> the exit status</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-add-main-option-entries"></a><h3>g_application_add_main_option_entries ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_add_main_option_entries (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                       <em class="parameter"><code>const <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntry</span></a> *entries</code></em>);</pre>
<p>Adds main option entries to be handled by <em class="parameter"><code>application</code></em>
.</p>
<p>This function is comparable to <a href="../glib-Commandline-option-parser.html#g-option-context-add-main-entries"><code class="function">g_option_context_add_main_entries()</code></a>.</p>
<p>After the commandline arguments are parsed, the
<a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a> signal will be emitted.  At this
point, the application can inspect the values pointed to by <em class="parameter"><code>arg_data</code></em>

in the given <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntrys</span></a>.</p>
<p>Unlike <a href="../glib-Commandline-option-parser.html#GOptionContext"><span class="type">GOptionContext</span></a>, <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> supports giving a <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
<em class="parameter"><code>arg_data</code></em>
 for a non-callback <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntry</span></a>.  This results in the
argument in question being packed into a <a href="../glib-GVariant.html#GVariantDict"><span class="type">GVariantDict</span></a> which is also
passed to <a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a>, where it can be
inspected and modified.  If <a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> is
set, then the resulting dictionary is sent to the primary instance,
where <a class="link" href="GApplicationCommandLine.html#g-application-command-line-get-options-dict" title="g_application_command_line_get_options_dict ()"><code class="function">g_application_command_line_get_options_dict()</code></a> will return it.
This "packing" is done according to the type of the argument --
booleans for normal flags, strings for strings, bytestrings for
filenames, etc.  The packing only occurs if the flag is given (ie: we
do not pack a "false" <a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> in the case that a flag is missing).</p>
<p>In general, it is recommended that all commandline arguments are
parsed locally.  The options dictionary should then be used to
transmit the result of the parsing to the primary instance, where
<a href="../glib-GVariant.html#g-variant-dict-lookup"><code class="function">g_variant_dict_lookup()</code></a> can be used.  For local options, it is
possible to either use <em class="parameter"><code>arg_data</code></em>
 in the usual way, or to consult (and
potentially remove) the option from the options dictionary.</p>
<p>This function is new in GLib 2.40.  Before then, the only real choice
was to send all of the commandline arguments (options and all) to the
primary instance for handling.  <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> ignored them completely
on the local side.  Calling this function "opts in" to the new
behaviour, and in particular, means that unrecognised options will be
treated as errors.  Unrecognised options have never been ignored when
<a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> is unset.</p>
<p>If <a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a> needs to see the list of
filenames, then the use of <a href="../glib-Commandline-option-parser.html#G-OPTION-REMAINING:CAPS"><code class="literal">G_OPTION_REMAINING</code></a> is recommended.  If
<em class="parameter"><code>arg_data</code></em>
 is <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> then <a href="../glib-Commandline-option-parser.html#G-OPTION-REMAINING:CAPS"><code class="literal">G_OPTION_REMAINING</code></a> can be used as a key into
the options dictionary.  If you do use <a href="../glib-Commandline-option-parser.html#G-OPTION-REMAINING:CAPS"><code class="literal">G_OPTION_REMAINING</code></a> then you
need to handle these arguments for yourself because once they are
consumed, they will no longer be visible to the default handling
(which treats them as filenames to be opened).</p>
<p>It is important to use the proper GVariant format when retrieving
the options with <a href="../glib-GVariant.html#g-variant-dict-lookup"><code class="function">g_variant_dict_lookup()</code></a>:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-NONE:CAPS"><code class="literal">G_OPTION_ARG_NONE</code></a>, use b</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-STRING:CAPS"><code class="literal">G_OPTION_ARG_STRING</code></a>, use &amp;s</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-INT:CAPS"><code class="literal">G_OPTION_ARG_INT</code></a>, use i</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-INT64:CAPS"><code class="literal">G_OPTION_ARG_INT64</code></a>, use x</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-DOUBLE:CAPS"><code class="literal">G_OPTION_ARG_DOUBLE</code></a>, use d</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-FILENAME:CAPS"><code class="literal">G_OPTION_ARG_FILENAME</code></a>, use ^ay</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-STRING-ARRAY:CAPS"><code class="literal">G_OPTION_ARG_STRING_ARRAY</code></a>, use &amp;as</p></li>
<li class="listitem"><p>for <a href="../glib-Commandline-option-parser.html#G-OPTION-ARG-FILENAME-ARRAY:CAPS"><code class="literal">G_OPTION_ARG_FILENAME_ARRAY</code></a>, use ^aay</p></li>
</ul></div>
<div class="refsect3">
<a name="g-application-add-main-option-entries.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>entries</p></td>
<td class="parameter_description"><p>(array zero-terminated=1) (element-type GOptionEntry) a
<a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated list of <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntrys</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-40.html#api-index-2.40">2.40</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-add-main-option"></a><h3>g_application_add_main_option ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_add_main_option (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                               <em class="parameter"><code>const <span class="type">char</span> *long_name</code></em>,
                               <em class="parameter"><code><span class="type">char</span> short_name</code></em>,
                               <em class="parameter"><code><a href="../glib-Commandline-option-parser.html#GOptionFlags"><span class="type">GOptionFlags</span></a> flags</code></em>,
                               <em class="parameter"><code><a href="../glib-Commandline-option-parser.html#GOptionArg"><span class="type">GOptionArg</span></a> arg</code></em>,
                               <em class="parameter"><code>const <span class="type">char</span> *description</code></em>,
                               <em class="parameter"><code>const <span class="type">char</span> *arg_description</code></em>);</pre>
<p>Add an option to be handled by <em class="parameter"><code>application</code></em>
.</p>
<p>Calling this function is the equivalent of calling
<a class="link" href="GApplication.html#g-application-add-main-option-entries" title="g_application_add_main_option_entries ()"><code class="function">g_application_add_main_option_entries()</code></a> with a single <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntry</span></a>
that has its arg_data member set to <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>The parsed arguments will be packed into a <a href="../glib-GVariant.html#GVariantDict"><span class="type">GVariantDict</span></a> which
is passed to <a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a>. If
<a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> is set, then it will also
be sent to the primary instance. See
<a class="link" href="GApplication.html#g-application-add-main-option-entries" title="g_application_add_main_option_entries ()"><code class="function">g_application_add_main_option_entries()</code></a> for more details.</p>
<p>See <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntry</span></a> for more documentation of the arguments.</p>
<div class="refsect3">
<a name="g-application-add-main-option.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>long_name</p></td>
<td class="parameter_description"><p>the long name of an option used to specify it in a commandline</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>short_name</p></td>
<td class="parameter_description"><p>the short name of an option</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>flags</p></td>
<td class="parameter_description"><p>flags from <a href="../glib-Commandline-option-parser.html#GOptionFlags"><span class="type">GOptionFlags</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>arg</p></td>
<td class="parameter_description"><p>the type of the option, as a <a href="../glib-Commandline-option-parser.html#GOptionArg"><span class="type">GOptionArg</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>description</p></td>
<td class="parameter_description"><p>the description for the option in <code class="literal">--help</code> output</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>arg_description</p></td>
<td class="parameter_description"><p> the placeholder to use for the extra argument
parsed by the option in <code class="literal">--help</code> output. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-42.html#api-index-2.42">2.42</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-add-option-group"></a><h3>g_application_add_option_group ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_add_option_group (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                <em class="parameter"><code><a href="../glib-Commandline-option-parser.html#GOptionGroup"><span class="type">GOptionGroup</span></a> *group</code></em>);</pre>
<p>Adds a <a href="../glib-Commandline-option-parser.html#GOptionGroup"><span class="type">GOptionGroup</span></a> to the commandline handling of <em class="parameter"><code>application</code></em>
.</p>
<p>This function is comparable to <a href="../glib-Commandline-option-parser.html#g-option-context-add-group"><code class="function">g_option_context_add_group()</code></a>.</p>
<p>Unlike <a class="link" href="GApplication.html#g-application-add-main-option-entries" title="g_application_add_main_option_entries ()"><code class="function">g_application_add_main_option_entries()</code></a>, this function does
not deal with <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> <em class="parameter"><code>arg_data</code></em>
 and never transmits options to the
primary instance.</p>
<p>The reason for that is because, by the time the options arrive at the
primary instance, it is typically too late to do anything with them.
Taking the GTK option group as an example: GTK will already have been
initialised by the time the <a class="link" href="GApplication.html#GApplication-command-line" title="The “command-line” signal"><span class="type">“command-line”</span></a> handler runs.
In the case that this is not the first-running instance of the
application, the existing instance may already have been running for
a very long time.</p>
<p>This means that the options from <a href="../glib-Commandline-option-parser.html#GOptionGroup"><span class="type">GOptionGroup</span></a> are only really usable
in the case that the instance of the application being run is the
first instance.  Passing options like <code class="literal">--display=</code> or <code class="literal">--gdk-debug=</code>
on future runs will have no effect on the existing primary instance.</p>
<p>Calling this function will cause the options in the supplied option
group to be parsed, but it does not cause you to be "opted in" to the
new functionality whereby unrecognised options are rejected even if
<a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> was given.</p>
<div class="refsect3">
<a name="g-application-add-option-group.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>group</p></td>
<td class="parameter_description"><p> a <a href="../glib-Commandline-option-parser.html#GOptionGroup"><span class="type">GOptionGroup</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-40.html#api-index-2.40">2.40</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-set-default"></a><h3>g_application_set_default ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_set_default (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Sets or unsets the default application for the process, as returned
by <a class="link" href="GApplication.html#g-application-get-default" title="g_application_get_default ()"><code class="function">g_application_get_default()</code></a>.</p>
<p>This function does not take its own reference on <em class="parameter"><code>application</code></em>
.  If
<em class="parameter"><code>application</code></em>
 is destroyed then the default application will revert
back to <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<div class="refsect3">
<a name="g-application-set-default.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p> the application to set as default, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-32.html#api-index-2.32">2.32</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-default"></a><h3>g_application_get_default ()</h3>
<pre class="programlisting"><a class="link" href="GApplication.html" title="GApplication"><span class="returnvalue">GApplication</span></a> *
g_application_get_default (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Returns the default <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> instance for this process.</p>
<p>Normally there is only one <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> per process and it becomes
the default when it is created.  You can exercise more control over
this by using <a class="link" href="GApplication.html#g-application-set-default" title="g_application_set_default ()"><code class="function">g_application_set_default()</code></a>.</p>
<p>If there is no default application then <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is returned.</p>
<div class="refsect3">
<a name="g-application-get-default.returns"></a><h4>Returns</h4>
<p> the default application for this process, or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-32.html#api-index-2.32">2.32</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-mark-busy"></a><h3>g_application_mark_busy ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_mark_busy (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Increases the busy count of <em class="parameter"><code>application</code></em>
.</p>
<p>Use this function to indicate that the application is busy, for instance
while a long running operation is pending.</p>
<p>The busy state will be exposed to other processes, so a session shell will
use that information to indicate the state to the user (e.g. with a
spinner).</p>
<p>To cancel the busy indication, use <a class="link" href="GApplication.html#g-application-unmark-busy" title="g_application_unmark_busy ()"><code class="function">g_application_unmark_busy()</code></a>.</p>
<div class="refsect3">
<a name="g-application-mark-busy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-38.html#api-index-2.38">2.38</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-unmark-busy"></a><h3>g_application_unmark_busy ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_unmark_busy (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Decreases the busy count of <em class="parameter"><code>application</code></em>
.</p>
<p>When the busy count reaches zero, the new state will be propagated
to other processes.</p>
<p>This function must only be called to cancel the effect of a previous
call to <a class="link" href="GApplication.html#g-application-mark-busy" title="g_application_mark_busy ()"><code class="function">g_application_mark_busy()</code></a>.</p>
<div class="refsect3">
<a name="g-application-unmark-busy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-38.html#api-index-2.38">2.38</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-get-is-busy"></a><h3>g_application_get_is_busy ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
g_application_get_is_busy (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>);</pre>
<p>Gets the application's current busy state, as set through
<a class="link" href="GApplication.html#g-application-mark-busy" title="g_application_mark_busy ()"><code class="function">g_application_mark_busy()</code></a> or <a class="link" href="GApplication.html#g-application-bind-busy-property" title="g_application_bind_busy_property ()"><code class="function">g_application_bind_busy_property()</code></a>.</p>
<div class="refsect3">
<a name="g-application-get-is-busy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-application-get-is-busy.returns"></a><h4>Returns</h4>
<p> <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>application</code></em>
is currenty marked as busy</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-44.html#api-index-2.44">2.44</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-bind-busy-property"></a><h3>g_application_bind_busy_property ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_bind_busy_property (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                  <em class="parameter"><code><a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> object</code></em>,
                                  <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *property</code></em>);</pre>
<p>Marks <em class="parameter"><code>application</code></em>
 as busy (see <a class="link" href="GApplication.html#g-application-mark-busy" title="g_application_mark_busy ()"><code class="function">g_application_mark_busy()</code></a>) while
<em class="parameter"><code>property</code></em>
 on <em class="parameter"><code>object</code></em>
 is <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>.</p>
<p>The binding holds a reference to <em class="parameter"><code>application</code></em>
 while it is active, but
not to <em class="parameter"><code>object</code></em>
. Instead, the binding is destroyed when <em class="parameter"><code>object</code></em>
 is
finalized.</p>
<div class="refsect3">
<a name="g-application-bind-busy-property.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p> a <a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GObject.Object]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>property</p></td>
<td class="parameter_description"><p>the name of a boolean property of <em class="parameter"><code>object</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-44.html#api-index-2.44">2.44</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-application-unbind-busy-property"></a><h3>g_application_unbind_busy_property ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_application_unbind_busy_property (<em class="parameter"><code><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application</code></em>,
                                    <em class="parameter"><code><a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> object</code></em>,
                                    <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *property</code></em>);</pre>
<p>Destroys a binding between <em class="parameter"><code>property</code></em>
 and the busy state of
<em class="parameter"><code>application</code></em>
 that was previously created with
<a class="link" href="GApplication.html#g-application-bind-busy-property" title="g_application_bind_busy_property ()"><code class="function">g_application_bind_busy_property()</code></a>.</p>
<div class="refsect3">
<a name="g-application-unbind-busy-property.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p> a <a href="../gobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> GObject.Object]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>property</p></td>
<td class="parameter_description"><p>the name of a boolean property of <em class="parameter"><code>object</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-44.html#api-index-2.44">2.44</a></p>
</div>
</div>
<div class="refsect1">
<a name="GApplication.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GApplication-struct"></a><h3>GApplication</h3>
<pre class="programlisting">typedef struct _GApplication GApplication;</pre>
<p><a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> is an opaque data structure and can only be accessed
using the following functions.</p>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplicationClass"></a><h3>struct GApplicationClass</h3>
<pre class="programlisting">struct GApplicationClass {
  /* signals */
  void                      (* startup)             (GApplication              *application);

  void                      (* activate)            (GApplication              *application);

  void                      (* open)                (GApplication              *application,
                                                     GFile                    **files,
                                                     gint                       n_files,
                                                     const gchar               *hint);

  int                       (* command_line)        (GApplication              *application,
                                                     GApplicationCommandLine   *command_line);

  /* vfuncs */

  /**
   * GApplicationClass::local_command_line:
   * @application: a #GApplication
   * @arguments: (inout) (array zero-terminated=1): array of command line arguments
   * @exit_status: (out): exit status to fill after processing the command line.
   *
   * This virtual function is always invoked in the local instance. It
   * gets passed a pointer to a %NULL-terminated copy of @argv and is
   * expected to remove arguments that it handled (shifting up remaining
   * arguments).
   *
   * The last argument to local_command_line() is a pointer to the @status
   * variable which can used to set the exit status that is returned from
   * g_application_run().
   *
   * See g_application_run() for more details on #GApplication startup.
   *
   * Returns: %TRUE if the commandline has been completely handled
   */
  gboolean                  (* local_command_line)  (GApplication              *application,
                                                     gchar                   ***arguments,
                                                     int                       *exit_status);

  void                      (* before_emit)         (GApplication              *application,
                                                     GVariant                  *platform_data);
  void                      (* after_emit)          (GApplication              *application,
                                                     GVariant                  *platform_data);
  void                      (* add_platform_data)   (GApplication              *application,
                                                     GVariantBuilder           *builder);
  void                      (* quit_mainloop)       (GApplication              *application);
  void                      (* run_mainloop)        (GApplication              *application);
  void                      (* shutdown)            (GApplication              *application);

  gboolean                  (* dbus_register)       (GApplication              *application,
                                                     GDBusConnection           *connection,
                                                     const gchar               *object_path,
                                                     GError                   **error);
  void                      (* dbus_unregister)     (GApplication              *application,
                                                     GDBusConnection           *connection,
                                                     const gchar               *object_path);
  gint                      (* handle_local_options)(GApplication              *application,
                                                     GVariantDict              *options);
};
</pre>
<p>Virtual function table for <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a>.</p>
<div class="refsect3">
<a name="GApplicationClass.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.startup"></a>startup</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked on the primary instance immediately after registration</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.activate"></a>activate</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked on the primary instance when an activation occurs</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.open"></a>open</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked on the primary instance when there are files to open</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.command-line"></a>command_line</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked on the primary instance when a command-line is
not handled locally</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.local-command-line"></a>local_command_line</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked (locally). The virtual function has the chance
to inspect (and possibly replace) command line arguments. See
<a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> for more information. Also see the
<a class="link" href="GApplication.html#GApplication-handle-local-options" title="The “handle-local-options” signal"><span class="type">“handle-local-options”</span></a> signal, which is a simpler
alternative to handling some commandline options locally</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.before-emit"></a>before_emit</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked on the primary instance before 'activate', 'open',
'command-line' or any action invocation, gets the 'platform data' from
the calling instance</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.after-emit"></a>after_emit</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked on the primary instance after 'activate', 'open',
'command-line' or any action invocation, gets the 'platform data' from
the calling instance</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.add-platform-data"></a>add_platform_data</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked (locally) to add 'platform data' to be sent to
the primary instance when activating, opening or invoking actions</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.quit-mainloop"></a>quit_mainloop</code></em> ()</p></td>
<td class="struct_member_description"><p>Used to be invoked on the primary instance when the use
count of the application drops to zero (and after any inactivity
timeout, if requested). Not used anymore since 2.32</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.run-mainloop"></a>run_mainloop</code></em> ()</p></td>
<td class="struct_member_description"><p>Used to be invoked on the primary instance from
<a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> if the use-count is non-zero. Since 2.32,
GApplication is iterating the main context directly and is not
using <em class="parameter"><code>run_mainloop</code></em>
anymore</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.shutdown"></a>shutdown</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked only on the registered primary instance immediately
after the main loop terminates</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.dbus-register"></a>dbus_register</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked locally during registration, if the application is
using its D-Bus backend. You can use this to export extra objects on the
bus, that need to exist before the application tries to own the bus name.
The function is passed the <a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="type">GDBusConnection</span></a> to to session bus, and the
object path that <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> will use to export is D-Bus API.
If this function returns <a href="../glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, registration will proceed; otherwise
registration will abort. Since: 2.34</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.dbus-unregister"></a>dbus_unregister</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked locally during unregistration, if the application
is using its D-Bus backend. Use this to undo anything done by the</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GApplicationClass.handle-local-options"></a>handle_local_options</code></em> ()</p></td>
<td class="struct_member_description"><p>invoked locally after the parsing of the commandline
options has occurred. Since: 2.40</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplicationFlags"></a><h3>enum GApplicationFlags</h3>
<p>Flags used to define the behaviour of a <a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a>.</p>
<div class="refsect3">
<a name="GApplicationFlags.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-FLAGS-NONE:CAPS"></a>G_APPLICATION_FLAGS_NONE</p></td>
<td class="enum_member_description">
<p>Default</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-IS-SERVICE:CAPS"></a>G_APPLICATION_IS_SERVICE</p></td>
<td class="enum_member_description">
<p>Run as a service. In this mode, registration
     fails if the service is already running, and the application
     will initially wait up to 10 seconds for an initial activation
     message to arrive.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-IS-LAUNCHER:CAPS"></a>G_APPLICATION_IS_LAUNCHER</p></td>
<td class="enum_member_description">
<p>Don't try to become the primary instance.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-HANDLES-OPEN:CAPS"></a>G_APPLICATION_HANDLES_OPEN</p></td>
<td class="enum_member_description">
<p>This application handles opening files (in
    the primary instance). Note that this flag only affects the default
    implementation of <code class="function">local_command_line()</code>, and has no effect if
    <a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> is given.
    See <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> for details.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"></a>G_APPLICATION_HANDLES_COMMAND_LINE</p></td>
<td class="enum_member_description">
<p>This application handles command line
    arguments (in the primary instance). Note that this flag only affect
    the default implementation of <code class="function">local_command_line()</code>.
    See <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> for details.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-SEND-ENVIRONMENT:CAPS"></a>G_APPLICATION_SEND_ENVIRONMENT</p></td>
<td class="enum_member_description">
<p>Send the environment of the
    launching process to the primary instance. Set this flag if your
    application is expected to behave differently depending on certain
    environment variables. For instance, an editor might be expected
    to use the <code class="literal">GIT_COMMITTER_NAME</code> environment variable
    when editing a git commit message. The environment is available
    to the <a class="link" href="GApplication.html#GApplication-command-line" title="The “command-line” signal"><span class="type">“command-line”</span></a> signal handler, via
    <a class="link" href="GApplicationCommandLine.html#g-application-command-line-getenv" title="g_application_command_line_getenv ()"><code class="function">g_application_command_line_getenv()</code></a>.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-NON-UNIQUE:CAPS"></a>G_APPLICATION_NON_UNIQUE</p></td>
<td class="enum_member_description">
<p>Make no attempts to do any of the typical
    single-instance application negotiation, even if the application
    ID is given.  The application neither attempts to become the
    owner of the application ID nor does it check if an existing
    owner already exists.  Everything occurs in the local process.
    Since: 2.30.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="G-APPLICATION-CAN-OVERRIDE-APP-ID:CAPS"></a>G_APPLICATION_CAN_OVERRIDE_APP_ID</p></td>
<td class="enum_member_description">
<p>Allow users to override the
    application ID from the command line with <code class="literal">--gapplication-app-id</code>.
    Since: 2.48</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-28.html#api-index-2.28">2.28</a></p>
</div>
</div>
<div class="refsect1">
<a name="GApplication.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GApplication--action-group"></a><h3>The <code class="literal">“action-group”</code> property</h3>
<pre class="programlisting">  “action-group”             <a class="link" href="GActionGroup.html" title="GActionGroup"><span class="type">GActionGroup</span></a> *</pre>
<p>The group of actions that the application exports.</p>
<p>Flags: Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--application-id"></a><h3>The <code class="literal">“application-id”</code> property</h3>
<pre class="programlisting">  “application-id”           <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The unique identifier for the application.</p>
<p>Flags: Read / Write / Construct</p>
<p>Default value: NULL</p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--flags"></a><h3>The <code class="literal">“flags”</code> property</h3>
<pre class="programlisting">  “flags”                    <a class="link" href="GApplication.html#GApplicationFlags" title="enum GApplicationFlags"><span class="type">GApplicationFlags</span></a></pre>
<p>Flags specifying the behaviour of the application.</p>
<p>Flags: Read / Write</p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--inactivity-timeout"></a><h3>The <code class="literal">“inactivity-timeout”</code> property</h3>
<pre class="programlisting">  “inactivity-timeout”       <a href="../glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Time (ms) to stay alive after becoming idle.</p>
<p>Flags: Read / Write</p>
<p>Default value: 0</p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--is-busy"></a><h3>The <code class="literal">“is-busy”</code> property</h3>
<pre class="programlisting">  “is-busy”                  <a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>Whether the application is currently marked as busy through
<a class="link" href="GApplication.html#g-application-mark-busy" title="g_application_mark_busy ()"><code class="function">g_application_mark_busy()</code></a> or <a class="link" href="GApplication.html#g-application-bind-busy-property" title="g_application_bind_busy_property ()"><code class="function">g_application_bind_busy_property()</code></a>.</p>
<p>Flags: Read</p>
<p>Default value: FALSE</p>
<p class="since">Since: <a class="link" href="api-index-2-44.html#api-index-2.44">2.44</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--is-registered"></a><h3>The <code class="literal">“is-registered”</code> property</h3>
<pre class="programlisting">  “is-registered”            <a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>If g_application_register() has been called.</p>
<p>Flags: Read</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--is-remote"></a><h3>The <code class="literal">“is-remote”</code> property</h3>
<pre class="programlisting">  “is-remote”                <a href="../glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
<p>If this application instance is remote.</p>
<p>Flags: Read</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication--resource-base-path"></a><h3>The <code class="literal">“resource-base-path”</code> property</h3>
<pre class="programlisting">  “resource-base-path”       <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The base resource path for the application.</p>
<p>Flags: Read / Write</p>
<p>Default value: NULL</p>
</div>
</div>
<div class="refsect1">
<a name="GApplication.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GApplication-activate"></a><h3>The <code class="literal">“activate”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      user_data)</pre>
<p>The ::activate signal is emitted on the primary instance when an
activation occurs. See <a class="link" href="GApplication.html#g-application-activate" title="g_application_activate ()"><code class="function">g_application_activate()</code></a>.</p>
<div class="refsect3">
<a name="GApplication-activate.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the application</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication-command-line"></a><h3>The <code class="literal">“command-line”</code> signal</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
user_function (<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a>            *application,
               <a class="link" href="GApplicationCommandLine.html" title="GApplicationCommandLine"><span class="type">GApplicationCommandLine</span></a> *command_line,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>                 user_data)</pre>
<p>The ::command-line signal is emitted on the primary instance when
a commandline is not handled locally. See <a class="link" href="GApplication.html#g-application-run" title="g_application_run ()"><code class="function">g_application_run()</code></a> and
the <a class="link" href="GApplicationCommandLine.html" title="GApplicationCommandLine"><span class="type">GApplicationCommandLine</span></a> documentation for more information.</p>
<div class="refsect3">
<a name="GApplication-command-line.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the application</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>command_line</p></td>
<td class="parameter_description"><p>a <a class="link" href="GApplicationCommandLine.html" title="GApplicationCommandLine"><span class="type">GApplicationCommandLine</span></a> representing the
passed commandline</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GApplication-command-line.returns"></a><h4>Returns</h4>
<p> An integer that is set as the exit status for the calling
process. See <a class="link" href="GApplicationCommandLine.html#g-application-command-line-set-exit-status" title="g_application_command_line_set_exit_status ()"><code class="function">g_application_command_line_set_exit_status()</code></a>.</p>
</div>
<p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication-handle-local-options"></a><h3>The <code class="literal">“handle-local-options”</code> signal</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
user_function (<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application,
               <a href="../glib-GVariant.html#GVariantDict"><span class="type">GVariantDict</span></a> *options,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      user_data)</pre>
<p>The ::handle-local-options signal is emitted on the local instance
after the parsing of the commandline options has occurred.</p>
<p>You can add options to be recognised during commandline option
parsing using <a class="link" href="GApplication.html#g-application-add-main-option-entries" title="g_application_add_main_option_entries ()"><code class="function">g_application_add_main_option_entries()</code></a> and
<a class="link" href="GApplication.html#g-application-add-option-group" title="g_application_add_option_group ()"><code class="function">g_application_add_option_group()</code></a>.</p>
<p>Signal handlers can inspect <em class="parameter"><code>options</code></em>
 (along with values pointed to
from the <em class="parameter"><code>arg_data</code></em>
 of an installed <a href="../glib-Commandline-option-parser.html#GOptionEntry"><span class="type">GOptionEntrys</span></a>) in order to
decide to perform certain actions, including direct local handling
(which may be useful for options like --version).</p>
<p>In the event that the application is marked
<a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> the "normal processing" will
send the <em class="parameter"><code>options</code></em>
 dictionary to the primary instance where it can be
read with <a class="link" href="GApplicationCommandLine.html#g-application-command-line-get-options-dict" title="g_application_command_line_get_options_dict ()"><code class="function">g_application_command_line_get_options_dict()</code></a>.  The signal
handler can modify the dictionary before returning, and the
modified dictionary will be sent.</p>
<p>In the event that <a class="link" href="GApplication.html#G-APPLICATION-HANDLES-COMMAND-LINE:CAPS"><code class="literal">G_APPLICATION_HANDLES_COMMAND_LINE</code></a> is not set,
"normal processing" will treat the remaining uncollected command
line arguments as filenames or URIs.  If there are no arguments,
the application is activated by <a class="link" href="GApplication.html#g-application-activate" title="g_application_activate ()"><code class="function">g_application_activate()</code></a>.  One or
more arguments results in a call to <a class="link" href="GApplication.html#g-application-open" title="g_application_open ()"><code class="function">g_application_open()</code></a>.</p>
<p>If you want to handle the local commandline arguments for yourself
by converting them to calls to <a class="link" href="GApplication.html#g-application-open" title="g_application_open ()"><code class="function">g_application_open()</code></a> or
<a class="link" href="GActionGroup.html#g-action-group-activate-action" title="g_action_group_activate_action ()"><code class="function">g_action_group_activate_action()</code></a> then you must be sure to register
the application first.  You should probably not call
<a class="link" href="GApplication.html#g-application-activate" title="g_application_activate ()"><code class="function">g_application_activate()</code></a> for yourself, however: just return -1 and
allow the default handler to do it for you.  This will ensure that
the <code class="literal">--gapplication-service</code> switch works properly (i.e. no activation
in that case).</p>
<p>Note that this signal is emitted from the default implementation of
<code class="function">local_command_line()</code>.  If you override that function and don't
chain up then this signal will never be emitted.</p>
<p>You can override <code class="function">local_command_line()</code> if you need more powerful
capabilities than what is provided here, but this should not
normally be required.</p>
<div class="refsect3">
<a name="GApplication-handle-local-options.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the application</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>options</p></td>
<td class="parameter_description"><p>the options dictionary</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GApplication-handle-local-options.returns"></a><h4>Returns</h4>
<p> an exit code. If you have handled your options and want
to exit the process, return a non-negative option, 0 for success,
and a positive value for failure. To continue, return -1 to let
the default option processing continue.</p>
</div>
<p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
<p class="since">Since: <a class="link" href="api-index-2-40.html#api-index-2.40">2.40</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication-open"></a><h3>The <code class="literal">“open”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      files,
               <a href="../glib-Basic-Types.html#gint"><span class="type">gint</span></a>          n_files,
               <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a>        *hint,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      user_data)</pre>
<p>The ::open signal is emitted on the primary instance when there are
files to open. See <a class="link" href="GApplication.html#g-application-open" title="g_application_open ()"><code class="function">g_application_open()</code></a> for more information.</p>
<div class="refsect3">
<a name="GApplication-open.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the application</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>files</p></td>
<td class="parameter_description"><p> an array of <a href="GFile.html#GFile-struct"><span class="type">GFiles</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_files][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> GFile]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>n_files</p></td>
<td class="parameter_description"><p>the length of <em class="parameter"><code>files</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>hint</p></td>
<td class="parameter_description"><p>a hint provided by the calling instance</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication-shutdown"></a><h3>The <code class="literal">“shutdown”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      user_data)</pre>
<p>The ::shutdown signal is emitted only on the registered primary instance
immediately after the main loop terminates.</p>
<div class="refsect3">
<a name="GApplication-shutdown.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the application</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GApplication-startup"></a><h3>The <code class="literal">“startup”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="GApplication.html" title="GApplication"><span class="type">GApplication</span></a> *application,
               <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>      user_data)</pre>
<p>The ::startup signal is emitted on the primary instance immediately
after registration. See <a class="link" href="GApplication.html#g-application-register" title="g_application_register ()"><code class="function">g_application_register()</code></a>.</p>
<div class="refsect3">
<a name="GApplication-startup.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>application</p></td>
<td class="parameter_description"><p>the application</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="../gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS">Run First</a></p>
</div>
</div>
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